| 无机阴离子对CuO-H_2O_2氧化苯酚废水的影响 |
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| 引用本文： | 徐夫元,李星,陈英文,祝社民,沈树宝.无机阴离子对CuO-H_2O_2氧化苯酚废水的影响[J].环境科学,2009,30(2). |
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| 作者姓名： | 徐夫元 李星 陈英文 祝社民 沈树宝 |
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| 作者单位： | 1. 南京工业大学国家生化工程技术研究中心,南京,210009
2. 南京工业大学材料科学与工程学院,南京,210009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，江苏省环保科技项目，江苏省自然科学基金 |
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| 摘 要： | 以苯酚为模型底物,研究了中性低温常压条件下无机阴离子对CuO-H2O2氧化苯酚废水的影响及机制.结果表明,CuO-H2O2能高效彻底氧化苯酚,10 min氧化率达94.7%,氧化遵循羟基自由基机制.无机阴离子对氧化效果有不同影响,浓度越高影响越显著.HCO-3加速H2O2的无效分解,当浓度从0增加到20 mmol·L-1 时,H2O2分解速率常数由0.3738 min-1提高到0.5347 min-1,TOC去除速率常数由0.267 min-1下降到0.0194 min-1.HPO2-4通过抑制H2O2分解实现对苯酚的氧化抑制,H2O2分解速率常数及TOC去除速率常数分别由0.3738 min-1、0.267 min-1降低到0.0338 min-1、 0.0338 min-1.Cl-能够促进H2O2有效分解,对苯酚氧化有利,H2O2分解速率常数及TOC去除速率常数分别由0.3738 min-1、0.267 min-1提高到0.6040 min-1、0.3879 min-1.NO-3、SO2-4对H2O2的分解及苯酚的氧化影响不大.
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| 关 键 词： | 无机阴离子 羟基自由基 |
Influences of Inorganic Anions on Oxidation of Phenol by CuO-H_2O_2 |
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| XU Fu-yuan,LI Xing,CHEN Ying-wen,ZHU She-min,SHEN Shu-bao.Influences of Inorganic Anions on Oxidation of Phenol by CuO-H_2O_2[J].Chinese Journal of Environmental Science,2009,30(2). |
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| Authors: | XU Fu-yuan LI Xing CHEN Ying-wen ZHU She-min SHEN Shu-bao |
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| Institution: | 1.National Engineering Research Centre for Biochemistry;Nanjing University of Technology;Nanjing 210009;China;2.College of Material Science and Engineering;China |
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| Abstract: | Phenol was selected as a model pollution substrate.The influences and mechanism of inorganic anions on its oxidation were investigated in neutral solution at low temperature and atmospheric pressure.Results showed that phenol could be removed efficiently by CuO and H_2O_2 with 94.7% removal rate in 10min,which followed hydroxyl radical oxidation mechanism.Inorganic anions influenced the oxidation with different mechanisms.Higher concentration would lead to more significant influences.HCO-_3 accelerated the ... |
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| Keywords: | TOC |
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